Problem with Array of Array

I think that array of array are not handled correctly. The wrapping array is ignored while drawing the schema, while the sample is rendered correctly.

Here is a yaml example with two cases:

      responses:
        '200':
          description: array of array at root level
          schema:
            type: array
            items:
                type: array
                items:
                    type: object
                    properties:
                        name:
                            type: string
                        age:
                            type: integer
        '201':
          description: object of array of array
          schema:
            type: object
            properties:
                myArray: 
                    type: array
                    items:
                        type: array
                        items:
                            type: string

Reproduce the issue with the two YAML response schemas and compare the rendered schemas with their samples, covering both root-level and nested arrays. Trace the schema-rendering path and its existing tests, then add regression coverage for these cases. Done means both array wrappers appear in the rendered API documentation.